I'm installing an electric brake controller for towing and I/m having a hard time figuring out which wire to splice into for the 12VDC signal off the brake pedal switches to the brake controller. There are 2 switches on the brake pedal. Upper switch has 1 wire harness on it and the lower switch has 2 wire harnesses on it. I've checked the upper switch and both wires always have 12VDC on them regardless of brake pedal position. I can't really get on the lower switch because the harnesses are pointing in the wrong direction.

Upper switch has 1 harness with 2 wires (brown and pink)
Lower switch first harness has 2 wires (white and orange)
Lower switch second harness has 4 wires (pink, green/white stripe, pink, violet)

Does anone have a wiring diagram of this and could let me know which wire only has 12VDC on it when brake pedal is depressed?

Thanks.

 

The orange wire is B+, and the white wire is your brake signal.

 

Thanks so much. Once I removed some electrical tape from the white wire I found it already stripped and another wire soldered to it for my remote starter.